text: 'use strict';
  
  // ---------------------------------------------------------------------------
  
  const Exchange = require ('./base/Exchange');
  const { ExchangeError, ArgumentsRequired, ExchangeNotAvailable, InvalidNonce, InsufficientFunds, OrderNotFound, DDoSProtection, InvalidOrder, AuthenticationError, RateLimitExceeded } = require ('./base/errors');
  const Precise = require ('./base/Precise');
  
  // ---------------------------------------------------------------------------
  
  module.exports = class yobit extends Exchange {
      describe () {
          return this.deepExtend (super.describe (), {
              'id': 'yobit',
              'name': 'YoBit',
              'countries': [ 'RU' ],
              'rateLimit': 3000, // responses are cached every 2 seconds
              'version': '3',
              'has': {
                  'CORS': undefined,
                  'spot': true,
                  'margin': false,
                  'swap': false,
                  'future': false,
                  'option': false,
                  'addMargin': false,
                  'cancelOrder': true,
                  'createDepositAddress': true,
                  'createMarketOrder': undefined,
                  'createOrder': true,
                  'createReduceOnlyOrder': false,
                  'fetchBalance': true,
                  'fetchBorrowRate': false,
                  'fetchBorrowRateHistories': false,
                  'fetchBorrowRateHistory': false,
                  'fetchBorrowRates': false,
                  'fetchBorrowRatesPerSymbol': false,
                  'fetchDepositAddress': true,
                  'fetchDeposits': undefined,
                  'fetchFundingHistory': false,
                  'fetchFundingRate': false,
                  'fetchFundingRateHistory': false,
                  'fetchFundingRates': false,
                  'fetchIndexOHLCV': false,
                  'fetchIsolatedPositions': false,
                  'fetchLeverage': false,
                  'fetchMarkets': true,
                  'fetchMarkOHLCV': false,
                  'fetchMyTrades': true,
                  'fetchOpenOrders': true,
                  'fetchOrder': true,
                  'fetchOrderBook': true,
                  'fetchOrderBooks': true,
                  'fetchPosition': false,
                  'fetchPositions': false,
                  'fetchPositionsRisk': false,
                  'fetchPremiumIndexOHLCV': false,
                  'fetchTicker': true,
                  'fetchTickers': true,
                  'fetchTrades': true,
                  'fetchTransactions': undefined,
                  'fetchWithdrawals': undefined,
                  'reduceMargin': false,
                  'setLeverage': false,
                  'setMarginMode': false,
                  'setPositionMode': false,
                  'withdraw': true,
              },
              'urls': {
                  'logo': 'https://user-images.githubusercontent.com/1294454/27766910-cdcbfdae-5eea-11e7-9859-03fea873272d.jpg',
                  'api': {
                      'public': 'https://yobit.net/api',
                      'private': 'https://yobit.net/tapi',
                  },
                  'www': 'https://www.yobit.net',
                  'doc': 'https://www.yobit.net/en/api/',
                  'fees': 'https://www.yobit.net/en/fees/',
              },
              'api': {
                  'public': {
                      'get': [
                          'depth/{pair}',
                          'info',
                          'ticker/{pair}',
                          'trades/{pair}',
                      ],
                  },
                  'private': {
                      'post': [
                          'ActiveOrders',
                          'CancelOrder',
                          'GetDepositAddress',
                          'getInfo',
                          'OrderInfo',
                          'Trade',
                          'TradeHistory',
                          'WithdrawCoinsToAddress',
                      ],
                  },
              },
              'fees': {
                  'trading': {
                      'maker': 0.002,
                      'taker': 0.002,
                  },
                  'funding': {
                      'withdraw': {},
                  },
              },
              'commonCurrencies': {
                  'AIR': 'AirCoin',
                  'ANI': 'ANICoin',
                  'ANT': 'AntsCoin',  // what is this, a coin for ants?
                  'ATMCHA': 'ATM',
                  'ASN': 'Ascension',
                  'AST': 'Astral',
                  'ATM': 'Autumncoin',
                  'BAB': 'Babel',
                  'BAN': 'BANcoin',
                  'BCC': 'BCH',
                  'BCS': 'BitcoinStake',
                  'BITS': 'Bitstar',
                  'BLN': 'Bulleon',
                  'BNS': 'Benefit Bonus Coin',
                  'BOT': 'BOTcoin',
                  'BON': 'BONES',
                  'BPC': 'BitcoinPremium',
                  'BST': 'BitStone',
                  'BTS': 'Bitshares2',
                  'CAT': 'BitClave',
                  'CBC': 'CryptoBossCoin',
                  'CMT': 'CometCoin',
                  'COIN': 'Coin.com',
                  'COV': 'Coven Coin',
                  'COVX': 'COV',
                  'CPC': 'Capricoin',
                  'CREDIT': 'Creditbit',
                  'CS': 'CryptoSpots',
                  'DCT': 'Discount',
                  'DFT': 'DraftCoin',
                  'DGD': 'DarkGoldCoin',
                  'DIRT': 'DIRTY',
                  'DROP': 'FaucetCoin',
                  'DSH': 'DASH',
                  'EGC': 'EverGreenCoin',
                  'EGG': 'EggCoin',
                  'EKO': 'EkoCoin',
                  'ENTER': 'ENTRC',
                  'EPC': 'ExperienceCoin',
                  'ESC': 'EdwardSnowden',
                  'EUROPE': 'EUROP',
                  'EXT': 'LifeExtension',
                  'FUND': 'FUNDChains',
                  'FUNK': 'FUNKCoin',
                  'FX': 'FCoin',
                  'GCC': 'GlobalCryptocurrency',
                  'GEN': 'Genstake',
                  'GENE': 'Genesiscoin',
                  'GOLD': 'GoldMint',
                  'GOT': 'Giotto Coin',
                  'GSX': 'GlowShares',
                  'GT': 'GTcoin',
                  'HTML5': 'HTML',
                  'HYPERX': 'HYPER',
                  'ICN': 'iCoin',
                  'INSANE': 'INSN',
                  'JNT': 'JointCoin',
                  'JPC': 'JupiterCoin',
                  'JWL': 'Jewels',
                  'KNC': 'KingN Coin',
                  'LBTCX': 'LiteBitcoin',
                  'LIZI': 'LiZi',
                  'LOC': 'LocoCoin',
                  'LOCX': 'LOC',
                  'LUNYR': 'LUN',
                  'LUN': 'LunarCoin',  // they just change the ticker if it is already taken
                  'LUNA': 'Luna Coin',
                  'MASK': 'Yobit MASK',
                  'MDT': 'Midnight',
                  'MEME': 'Memez Token', // conflict with Meme Inu / Degenerator Meme
                  'MIS': 'MIScoin',
                  'MM': 'MasterMint', // conflict with MilliMeter
                  'NAV': 'NavajoCoin',
                  'NBT': 'NiceBytes',
                  'OMG': 'OMGame',
                  'ONX': 'Onix',
                  'PAC': '$PAC',
                  'PLAY': 'PlayCoin',
                  'PIVX': 'Darknet',
                  'PRS': 'PRE',
                  'PURE': 'PurePOS',
                  'PUTIN': 'PutinCoin',
                  'SPACE': 'Spacecoin',
                  'STK': 'StakeCoin',
                  'SUB': 'Subscriptio',
                  'PAY': 'EPAY',
                  'PLC': 'Platin Coin',
                  'RAI': 'RaiderCoin',
                  'RCN': 'RCoin',
                  'REP': 'Republicoin',
                  'RUR': 'RUB',
                  'SBTC': 'Super Bitcoin',
                  'SMC': 'SmartCoin',
                  'SOLO': 'SoloCoin',
                  'STAR': 'StarCoin',
                  'SUPER': 'SuperCoin',
                  'TTC': 'TittieCoin',
                  'UNI': 'Universe',
                  'UST': 'Uservice',
                  'VOL': 'VolumeCoin',
                  'XIN': 'XINCoin',
                  'XMT': 'SummitCoin',
                  'XRA': 'Ratecoin',
              },
              'options': {
                  // 'fetchTickersMaxLength': 2048,
                  'fetchOrdersRequiresSymbol': true,
                  'fetchTickersMaxLength': 512,
              },
              'exceptions': {
                  'exact': {
                      '803': InvalidOrder, // "Count could not be less than 0.001." (selling below minAmount)
                      '804': InvalidOrder, // "Count could not be more than 10000." (buying above maxAmount)
                      '805': InvalidOrder, // "price could not be less than X." (minPrice violation on buy & sell)
                      '806': InvalidOrder, // "price could not be more than X." (maxPrice violation on buy & sell)
                      '807': InvalidOrder, // "cost could not be less than X." (minCost violation on buy & sell)
                      '831': InsufficientFunds, // "Not enougth X to create buy order." (buying with balance.quote < order.cost)
                      '832': InsufficientFunds, // "Not enougth X to create sell order." (selling with balance.base < order.amount)
                      '833': OrderNotFound, // "Order with id X was not found." (cancelling non-existent, closed and cancelled order)
                  },
                  'broad': {
                      'Invalid pair name': ExchangeError, // {"success":0,"error":"Invalid pair name: btc_eth"}
                      'invalid api key': AuthenticationError,
                      'invalid sign': AuthenticationError,
                      'api key dont have trade permission': AuthenticationError,
                      'invalid parameter': InvalidOrder,
                      'invalid order': InvalidOrder,
                      'The given order has already been cancelled': InvalidOrder,
                      'Requests too often': DDoSProtection,
                      'not available': ExchangeNotAvailable,
                      'data unavailable': ExchangeNotAvailable,
                      'external service unavailable': ExchangeNotAvailable,
                      'Total transaction amount': InvalidOrder, // { "success": 0, "error": "Total transaction amount is less than minimal total: 0.00010000"}
                      'The given order has already been closed and cannot be cancelled': InvalidOrder,
                      'Insufficient funds': InsufficientFunds,
                      'invalid key': AuthenticationError,
                      'invalid nonce': InvalidNonce, // {"success":0,"error":"invalid nonce (has already been used)"}'
                      'Total order amount is less than minimal amount': InvalidOrder,
                      'Rate Limited': RateLimitExceeded,
                  },
              },
              'orders': {}, // orders cache / emulation
          });
      }
  
      parseBalance (response) {
          const balances = this.safeValue (response, 'return', {});
          const timestamp = this.safeInteger (balances, 'server_time');
          const result = {
              'info': response,
              'timestamp': timestamp,
              'datetime': this.iso8601 (timestamp),
          };
          const free = this.safeValue (balances, 'funds', {});
          const total = this.safeValue (balances, 'funds_incl_orders', {});
          const currencyIds = Object.keys (this.extend (free, total));
          for (let i = 0; i < currencyIds.length; i++) {
              const currencyId = currencyIds[i];
              const code = this.safeCurrencyCode (currencyId);
              const account = this.account ();
              account['free'] = this.safeString (free, currencyId);
              account['total'] = this.safeString (total, currencyId);
              result[code] = account;
          }
          return this.safeBalance (result);
      }
  
      async fetchBalance (params = {}) {
          await this.loadMarkets ();
          const response = await this.privatePostGetInfo (params);
          //
          //     {
          //         "success":1,
          //         "return":{
          //             "funds":{
          //                 "ltc":22,
          //                 "nvc":423.998,
          //                 "ppc":10,
          //             },
          //             "funds_incl_orders":{
          //                 "ltc":32,
          //                 "nvc":523.998,
          //                 "ppc":20,
          //             },
          //             "rights":{
          //                 "info":1,
          //                 "trade":0,
          //                 "withdraw":0
          //             },
          //             "transaction_count":0,
          //             "open_orders":1,
          //             "server_time":1418654530
          //         }
          //     }
          //
          return this.parseBalance (response);
      }
  
      async fetchMarkets (params = {}) {
          const response = await this.publicGetInfo (params);
          //
          //     {
          //         "server_time":1615856752,
          //         "pairs":{
          //             "ltc_btc":{
          //                 "decimal_places":8,
          //                 "min_price":0.00000001,
          //                 "max_price":10000,
          //                 "min_amount":0.0001,
          //                 "min_total":0.0001,
          //                 "hidden":0,
          //                 "fee":0.2,
          //                 "fee_buyer":0.2,
          //                 "fee_seller":0.2
          //             },
          //         },
          //     }
          //
          const markets = this.safeValue (response, 'pairs');
          const keys = Object.keys (markets);
          const result = [];
          for (let i = 0; i < keys.length; i++) {
              const id = keys[i];
              const market = markets[id];
              const [ baseId, quoteId ] = id.split ('_');
              let base = baseId.toUpperCase ();
              let quote = quoteId.toUpperCase ();
              base = this.safeCurrencyCode (base);
              quote = this.safeCurrencyCode (quote);
              const hidden = this.safeInteger (market, 'hidden');
              let feeString = this.safeString (market, 'fee');
              feeString = Precise.stringDiv (feeString, '100');
              // yobit maker = taker
              result.push ({
                  'id': id,
                  'symbol': base + '/' + quote,
                  'base': base,
                  'quote': quote,
                  'settle': undefined,
                  'baseId': baseId,
                  'quoteId': quoteId,
                  'settleId': undefined,
                  'type': 'spot',
                  'spot': true,
                  'margin': false,
                  'swap': false,
                  'future': false,
                  'option': false,
                  'active': (hidden === 0),
                  'contract': false,
                  'linear': undefined,
                  'inverse': undefined,
                  'taker': this.parseNumber (feeString),
                  'maker': this.parseNumber (feeString),
                  'contractSize': undefined,
                  'expiry': undefined,
                  'expiryDatetime': undefined,
                  'strike': undefined,
                  'optionType': undefined,
                  'precision': {
                      'amount': this.safeInteger (market, 'decimal_places'),
                      'price': this.safeInteger (market, 'decimal_places'),
                  },
                  'limits': {
                      'leverage': {
                          'min': undefined,
                          'max': undefined,
                      },
                      'amount': {
                          'min': this.safeNumber (market, 'min_amount'),
                          'max': this.safeNumber (market, 'max_amount'),
                      },
                      'price': {
                          'min': this.safeNumber (market, 'min_price'),
                          'max': this.safeNumber (market, 'max_price'),
                      },
                      'cost': {
                          'min': this.safeNumber (market, 'min_total'),
                          'max': undefined,
                      },
                  },
                  'info': market,
              });
          }
          return result;
      }
  
      async fetchOrderBook (symbol, limit = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'pair': market['id'],
          };
          if (limit !== undefined) {
              request['limit'] = limit; // default = 150, max = 2000
          }
          const response = await this.publicGetDepthPair (this.extend (request, params));
          const market_id_in_reponse = (market['id'] in response);
          if (!market_id_in_reponse) {
              throw new ExchangeError (this.id + ' ' + market['symbol'] + ' order book is empty or not available');
          }
          const orderbook = response[market['id']];
          return this.parseOrderBook (orderbook, symbol);
      }
  
      async fetchOrderBooks (symbols = undefined, limit = undefined, params = {}) {
          await this.loadMarkets ();
          let ids = undefined;
          if (symbols === undefined) {
              ids = this.ids.join ('-');
              // max URL length is 2083 symbols, including http schema, hostname, tld, etc...
              if (ids.length > 2048) {
                  const numIds = this.ids.length;
                  throw new ExchangeError (this.id + ' has ' + numIds.toString () + ' symbols exceeding max URL length, you are required to specify a list of symbols in the first argument to fetchOrderBooks');
              }
          } else {
              ids = this.marketIds (symbols);
              ids = ids.join ('-');
          }
          const request = {
              'pair': ids,
              // 'ignore_invalid': true,
          };
          if (limit !== undefined) {
              request['limit'] = limit;
          }
          const response = await this.publicGetDepthPair (this.extend (request, params));
          const result = {};
          ids = Object.keys (response);
          for (let i = 0; i < ids.length; i++) {
              const id = ids[i];
              const symbol = this.safeSymbol (id);
              result[symbol] = this.parseOrderBook (response[id], symbol);
          }
          return result;
      }
  
      parseTicker (ticker, market = undefined) {
          //
          //     {
          //         high: 0.03497582,
          //         low: 0.03248474,
          //         avg: 0.03373028,
          //         vol: 120.11485715062999,
          //         vol_cur: 3572.24914074,
          //         last: 0.0337611,
          //         buy: 0.0337442,
          //         sell: 0.03377798,
          //         updated: 1537522009
          //     }
          //
          const timestamp = this.safeTimestamp (ticker, 'updated');
          const last = this.safeString (ticker, 'last');
          return this.safeTicker ({
              'symbol': this.safeSymbol (undefined, market),
              'timestamp': timestamp,
              'datetime': this.iso8601 (timestamp),
              'high': this.safeString (ticker, 'high'),
              'low': this.safeString (ticker, 'low'),
              'bid': this.safeString (ticker, 'buy'),
              'bidVolume': undefined,
              'ask': this.safeString (ticker, 'sell'),
              'askVolume': undefined,
              'vwap': undefined,
              'open': undefined,
              'close': last,
              'last': last,
              'previousClose': undefined,
              'change': undefined,
              'percentage': undefined,
              'average': this.safeString (ticker, 'avg'),
              'baseVolume': this.safeString (ticker, 'vol_cur'),
              'quoteVolume': this.safeString (ticker, 'vol'),
              'info': ticker,
          }, market, false);
      }
  
      async fetchTickers (symbols = undefined, params = {}) {
          await this.loadMarkets ();
          let ids = this.ids;
          if (symbols === undefined) {
              const numIds = ids.length;
              ids = ids.join ('-');
              const maxLength = this.safeInteger (this.options, 'fetchTickersMaxLength', 2048);
              // max URL length is 2048 symbols, including http schema, hostname, tld, etc...
              if (ids.length > this.options['fetchTickersMaxLength']) {
                  throw new ArgumentsRequired (this.id + ' has ' + numIds.toString () + ' markets exceeding max URL length for this endpoint (' + maxLength.toString () + ' characters), please, specify a list of symbols of interest in the first argument to fetchTickers');
              }
          } else {
              ids = this.marketIds (symbols);
              ids = ids.join ('-');
          }
          const request = {
              'pair': ids,
          };
          const tickers = await this.publicGetTickerPair (this.extend (request, params));
          const result = {};
          const keys = Object.keys (tickers);
          for (let k = 0; k < keys.length; k++) {
              const id = keys[k];
              const ticker = tickers[id];
              const market = this.safeMarket (id);
              const symbol = market['symbol'];
              result[symbol] = this.parseTicker (ticker, market);
          }
          return this.filterByArray (result, 'symbol', symbols);
      }
  
      async fetchTicker (symbol, params = {}) {
          const tickers = await this.fetchTickers ([ symbol ], params);
          return tickers[symbol];
      }
  
      parseTrade (trade, market = undefined) {
          const timestamp = this.safeTimestamp (trade, 'timestamp');
          let side = this.safeString (trade, 'type');
          if (side === 'ask') {
              side = 'sell';
          } else if (side === 'bid') {
              side = 'buy';
          }
          const priceString = this.safeString2 (trade, 'rate', 'price');
          const id = this.safeString2 (trade, 'trade_id', 'tid');
          const order = this.safeString (trade, 'order_id');
          const marketId = this.safeString (trade, 'pair');
          const symbol = this.safeSymbol (marketId, market);
          const amountString = this.safeString (trade, 'amount');
          const cost = this.parseNumber (Precise.stringMul (priceString, amountString));
          const price = this.parseNumber (priceString);
          const amount = this.parseNumber (amountString);
          const type = 'limit'; // all trades are still limit trades
          let fee = undefined;
          const feeCost = this.safeNumber (trade, 'commission');
          if (feeCost !== undefined) {
              const feeCurrencyId = this.safeString (trade, 'commissionCurrency');
              const feeCurrencyCode = this.safeCurrencyCode (feeCurrencyId);
              fee = {
                  'cost': feeCost,
                  'currency': feeCurrencyCode,
              };
          }
          const isYourOrder = this.safeValue (trade, 'is_your_order');
          if (isYourOrder !== undefined) {
              if (fee === undefined) {
                  fee = this.calculateFee (symbol, type, side, amount, price, 'taker');
              }
          }
          return {
              'id': id,
              'order': order,
              'timestamp': timestamp,
              'datetime': this.iso8601 (timestamp),
              'symbol': symbol,
              'type': type,
              'side': side,
              'takerOrMaker': undefined,
              'price': price,
              'amount': amount,
              'cost': cost,
              'fee': fee,
              'info': trade,
          };
      }
  
      async fetchTrades (symbol, since = undefined, limit = undefined, params = {}) {
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'pair': market['id'],
          };
          if (limit !== undefined) {
              request['limit'] = limit;
          }
          const response = await this.publicGetTradesPair (this.extend (request, params));
          if (Array.isArray (response)) {
              const numElements = response.length;
              if (numElements === 0) {
                  return [];
              }
          }
          return this.parseTrades (response[market['id']], market, since, limit);
      }
  
      async createOrder (symbol, type, side, amount, price = undefined, params = {}) {
          if (type === 'market') {
              throw new ExchangeError (this.id + ' allows limit orders only');
          }
          await this.loadMarkets ();
          const market = this.market (symbol);
          const request = {
              'pair': market['id'],
              'type': side,
              'amount': this.amountToPrecision (symbol, amount),
              'rate': this.priceToPrecision (symbol, price),
          };
          const response = await this.privatePostTrade (this.extend (request, params));
          let id = undefined;
          let status = 'open';
          let filled = 0.0;
          let remaining = amount;
          if ('return' in response) {
              id = this.safeString (response['return'], 'order_id');
              if (id === '0') {
                  id = this.safeString (response['return'], 'init_order_id');
                  status = 'closed';
              }
              filled = this.safeNumber (response['return'], 'received', 0.0);
              remaining = this.safeNumber (response['return'], 'remains', amount);
          }
          const timestamp = this.milliseconds ();
          return {
              'id': id,
              'timestamp': timestamp,
              'datetime': this.iso8601 (timestamp),
              'lastTradeTimestamp': undefined,
              'status': status,
              'symbol': symbol,
              'type': type,
              'side': side,
              'price': price,
              'cost': price * filled,
              'amount': amount,
              'remaining': remaining,
              'filled': filled,
              'fee': undefined,
              // 'trades': this.parseTrades (order['trades'], market),
              'info': response,
              'clientOrderId': undefined,
              'average': undefined,
              'trades': undefined,
          };
      }
  
      async cancelOrder (id, symbol = undefined, params = {}) {
          await this.loadMarkets ();
          const request = {
              'order_id': parseInt (id),
          };
          return await this.privatePostCancelOrder (this.extend (request, params));
      }
  
      parseOrderStatus (status) {
          const statuses = {
              '0': 'open',
              '1': 'closed',
              '2': 'canceled',
              '3': 'open', // or partially-filled and canceled? https://github.com/ccxt/ccxt/issues/1594
          };
          return this.safeString (statuses, status, status);
      }
  
      parseOrder (order, market = undefined) {
          const id = this.safeString (order, 'id');
          const status = this.parseOrderStatus (this.safeString (order, 'status'));
          const timestamp = this.safeTimestamp (order, 'timestamp_created');
          const marketId = this.safeString (order, 'pair');
          const symbol = this.safeSymbol (marketId, market);
          const remaining = this.safeString (order, 'amount');
          const amount = this.safeString (order, 'start_amount');
          const price = this.safeString (order, 'rate');
          const fee = undefined;
          const type = 'limit';
          const side = this.safeString (order, 'type');
          return this.safeOrder ({
              'info': order,
              'id': id,
              'clientOrderId': undefined,
              'symbol': symbol,
              'timestamp': timestamp,
              'datetime': this.iso8601 (timestamp),
              'lastTradeTimestamp': undefined,
              'type': type,
              'timeInForce': undefined,
              'postOnly': undefined,
              'side': side,
              'price': price,
              'stopPrice': undefined,
              'cost': undefined,
              'amount': amount,
              'remaining': remaining,
              'filled': undefined,
              'status': status,
              'fee': fee,
              'average': undefined,
              'trades': undefined,
          }, market);
      }
  
      async fetchOrder (id, symbol = undefined, params = {}) {
          await this.loadMarkets ();
          const request = {
              'order_id': parseInt (id),
          };
          const response = await this.privatePostOrderInfo (this.extend (request, params));
          id = id.toString ();
          const orders = this.safeValue (response, 'return', {});
          return this.parseOrder (this.extend ({ 'id': id }, orders[id]));
      }
  
      async fetchOpenOrders (symbol = undefined, since = undefined, limit = undefined, params = {}) {
          if (symbol === undefined) {
              throw new ArgumentsRequired (this.id + ' fetchOpenOrders() requires a symbol argument');
          }
          await this.loadMarkets ();
          const request = {};
          const market = undefined;
          if (symbol !== undefined) {
              const market = this.market (symbol);
              request['pair'] = market['id'];
          }
          const response = await this.privatePostActiveOrders (this.extend (request, params));
          const orders = this.safeValue (response, 'return', []);
          return this.parseOrders (orders, market, since, limit);
      }
  
      async fetchMyTrades (symbol = undefined, since = undefined, limit = undefined, params = {}) {
          if (symbol === undefined) {
              throw new ArgumentsRequired (this.id + ' fetchMyTrades() requires a `symbol` argument');
          }
          await this.loadMarkets ();
          const market = this.market (symbol);
          // some derived classes use camelcase notation for request fields
          const request = {
              // 'from': 123456789, // trade ID, from which the display starts numerical 0 (test result: liqui ignores this field)
              // 'count': 1000, // the number of trades for display numerical, default = 1000
              // 'from_id': trade ID, from which the display starts numerical 0
              // 'end_id': trade ID on which the display ends numerical ∞
              // 'order': 'ASC', // sorting, default = DESC (test result: liqui ignores this field, most recent trade always goes last)
              // 'since': 1234567890, // UTC start time, default = 0 (test result: liqui ignores this field)
              // 'end': 1234567890, // UTC end time, default = ∞ (test result: liqui ignores this field)
              'pair': market['id'],
          };
          if (limit !== undefined) {
              request['count'] = parseInt (limit);
          }
          if (since !== undefined) {
              request['since'] = parseInt (since / 1000);
          }
          const response = await this.privatePostTradeHistory (this.extend (request, params));
          const trades = this.safeValue (response, 'return', {});
          const ids = Object.keys (trades);
          const result = [];
          for (let i = 0; i < ids.length; i++) {
              const id = ids[i];
              const trade = this.parseTrade (this.extend (trades[id], {
                  'trade_id': id,
              }), market);
              result.push (trade);
          }
          return this.filterBySymbolSinceLimit (result, symbol, since, limit);
      }
  
      async createDepositAddress (code, params = {}) {
          const request = {
              'need_new': 1,
          };
          const response = await this.fetchDepositAddress (code, this.extend (request, params));
          const address = this.safeString (response, 'address');
          this.checkAddress (address);
          return {
              'currency': code,
              'address': address,
              'tag': undefined,
              'info': response['info'],
          };
      }
  
      async fetchDepositAddress (code, params = {}) {
          await this.loadMarkets ();
          const currency = this.currency (code);
          const request = {
              'coinName': currency['id'],
              'need_new': 0,
          };
          const response = await this.privatePostGetDepositAddress (this.extend (request, params));
          const address = this.safeString (response['return'], 'address');
          this.checkAddress (address);
          return {
              'currency': code,
              'address': address,
              'tag': undefined,
              'network': undefined,
              'info': response,
          };
      }
  
      async withdraw (code, amount, address, tag = undefined, params = {}) {
          [ tag, params ] = this.handleWithdrawTagAndParams (tag, params);
          this.checkAddress (address);
          await this.loadMarkets ();
          const currency = this.currency (code);
          const request = {
              'coinName': currency['id'],
              'amount': amount,
              'address': address,
          };
          // no docs on the tag, yet...
          if (tag !== undefined) {
              throw new ExchangeError (this.id + ' withdraw() does not support the tag argument yet due to a lack of docs on withdrawing with tag/memo on behalf of the exchange.');
          }
          const response = await this.privatePostWithdrawCoinsToAddress (this.extend (request, params));
          return {
              'info': response,
              'id': undefined,
          };
      }
  
      sign (path, api = 'public', method = 'GET', params = {}, headers = undefined, body = undefined) {
          let url = this.urls['api'][api];
          const query = this.omit (params, this.extractParams (path));
          if (api === 'private') {
              this.checkRequiredCredentials ();
              const nonce = this.nonce ();
              body = this.urlencode (this.extend ({
                  'nonce': nonce,
                  'method': path,
              }, query));
              const signature = this.hmac (this.encode (body), this.encode (this.secret), 'sha512');
              headers = {
                  'Content-Type': 'application/x-www-form-urlencoded',
                  'Key': this.apiKey,
                  'Sign': signature,
              };
          } else if (api === 'public') {
              url += '/' + this.version + '/' + this.implodeParams (path, params);
              if (Object.keys (query).length) {
                  url += '?' + this.urlencode (query);
              }
          } else {
              url += '/' + this.implodeParams (path, params);
              if (method === 'GET') {
                  if (Object.keys (query).length) {
                      url += '?' + this.urlencode (query);
                  }
              } else {
                  if (Object.keys (query).length) {
                      body = this.json (query);
                      headers = {
                          'Content-Type': 'application/json',
                      };
                  }
              }
          }
          return { 'url': url, 'method': method, 'body': body, 'headers': headers };
      }
  
      handleErrors (httpCode, reason, url, method, headers, body, response, requestHeaders, requestBody) {
          if (response === undefined) {
              return; // fallback to default error handler
          }
          if ('success' in response) {
              //
              // 1 - Liqui only returns the integer 'success' key from their private API
              //
              //     { "success": 1, ... } httpCode === 200
              //     { "success": 0, ... } httpCode === 200
              //
              // 2 - However, exchanges derived from Liqui, can return non-integers
              //
              //     It can be a numeric string
              //     { "sucesss": "1", ... }
              //     { "sucesss": "0", ... }, httpCode >= 200 (can be 403, 502, etc)
              //
              //     Or just a string
              //     { "success": "true", ... }
              //     { "success": "false", ... }, httpCode >= 200
              //
              //     Or a boolean
              //     { "success": true, ... }
              //     { "success": false, ... }, httpCode >= 200
              //
              // 3 - Oversimplified, Python PEP8 forbids comparison operator (===) of different types
              //
              // 4 - We do not want to copy-paste and duplicate the code of this handler to other exchanges derived from Liqui
              //
              // To cover points 1, 2, 3 and 4 combined this handler should work like this:
              //
              let success = this.safeValue (response, 'success', false);
              if (typeof success === 'string') {
                  if ((success === 'true') || (success === '1')) {
                      success = true;
                  } else {
                      success = false;
                  }
              }
              if (!success) {
                  const code = this.safeString (response, 'code');
                  const message = this.safeString (response, 'error');
                  const feedback = this.id + ' ' + body;
                  this.throwExactlyMatchedException (this.exceptions['exact'], code, feedback);
                  this.throwExactlyMatchedException (this.exceptions['exact'], message, feedback);
                  this.throwBroadlyMatchedException (this.exceptions['broad'], message, feedback);
                  throw new ExchangeError (feedback); // unknown message
              }
          }
      }
  };
  